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annotate gen/cl_helpers.h @ 1578:1dee66f6ec0b

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Removed a chunk of code in favour of a shorter and more portable method
author Robert Clipsham <robert@octarineparrot.com>
date Tue, 08 Sep 2009 11:21:30 +0100
parents 3171f67ad006
children 40bd4a0d4870
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1 #ifndef LDC_CL_HELPERS_H
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2 #define LDC_CL_HELPERS_H
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3
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4 #include <string>
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5
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6 #include "llvm/Support/CommandLine.h"
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7 #include "llvm/Support/Compiler.h"
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8
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9 struct Array;
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10
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11 namespace opts {
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12 namespace cl = llvm::cl;
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13
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14 /// Helper class for fancier options
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15 class FlagParser : public cl::parser<bool> {
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16 std::vector<std::pair<std::string, bool> > switches;
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17 public:
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18 template <class Opt>
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19 void initialize(Opt &O) {
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20 std::string Name = O.ArgStr;
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21 switches.push_back(make_pair("enable-" + Name, true));
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22 switches.push_back(make_pair("disable-" + Name, false));
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23 // Replace <foo> with -enable-<foo>
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24 O.ArgStr = switches[0].first.c_str();
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25 }
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26
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27 bool parse(cl::Option &O, const char *ArgName, const std::string &ArgValue, bool &Val);
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28
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29 void getExtraOptionNames(std::vector<const char*> &Names);
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30 };
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31
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32 /// Helper class for options that set multiple flags
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33 class MultiSetter {
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34 std::vector<bool*> locations;
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35 bool invert;
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36 MultiSetter(bool); //not implemented, disable auto-conversion
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37 public:
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38 MultiSetter(bool invert, bool* p, ...) END_WITH_NULL;
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39
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40 void operator=(bool val);
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41 };
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42
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43 /// Helper class to fill Array with char* when given strings
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44 /// (Errors on empty strings)
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45 class ArrayAdapter {
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46 const char* name;
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47 Array** arrp;
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48 public:
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49 ArrayAdapter(const char* name_, Array*& arr) {
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50 name = name_;
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51 arrp = &arr;
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52 assert(name);
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53 assert(arrp);
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54 }
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55
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56 void push_back(const char* cstr);
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57
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58 void push_back(const std::string& str) {
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59 push_back(str.c_str());
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60 }
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61 };
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62
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63 /// Helper class to allow use of a parser<bool> with BoolOrDefault
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64 class BoolOrDefaultAdapter {
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65 cl::boolOrDefault value;
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66 public:
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67 operator cl::boolOrDefault() {
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68 return value;
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69 }
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70
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71 void operator=(cl::boolOrDefault val) {
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72 value = val;
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73 }
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74
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75 void operator=(bool val) {
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76 *this = (val ? cl::BOU_TRUE : cl::BOU_FALSE);
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77 }
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78 };
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79 }
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80
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81 #endif